20yo & pcos and want to make sure I'm not taking to much vitamins. One a day women's, prenatal, c & e, folic acid, b complex, chromium picolinate?

Limit fat solubles. Only the fat soluble vitamins have a risk of building up to toxic levels the others are merely excreted in the urine.
Though likely. Not doing harm, you are wasting money. Just the womens one a day has all the vitamins you need. Good luck.